Nylon-Based Alloy Resin Compostion and Light Emitting Diode (LED) Reflector Using the Same

Abstract

A nylon-based alloy resin composition including (A) a modified nylon-based thermoplastic resin including a benzene ring in a main chain, (B) a styrene-based thermoplastic resin having a syndiotactic structure, and (C) an inorganic filler and a light emitting diode (LED) reflector using the same is provided.

1 . A nylon-based alloy resin composition comprising:
 (A) 20 to 70 wt % of a modified nylon-based thermoplastic resin including a benzene ring in its main chain;   (B) 10 to 70 wt % of a syndiotactic styrene-based thermoplastic resin; and   (C) 10 to 60 wt % of an inorganic filler.   
     
     
         2 . The nylon-based alloy resin composition of  claim 1 , wherein the modified nylon-based thermoplastic resin is prepared by condensation-polymerizing a dicarboxylic acid monomer including an aromatic dicarboxylic acid in an amount ranging from 10 to 100 mol % with an aliphatic or alicyclic diamine monomer. 
     
     
         3 . The nylon-based alloy resin composition of  claim 1 , wherein the modified nylon-based thermoplastic resin comprises nylon 6T, nylon 9T, nylon 10T, nylon 11T, nylon 12T, nylon 6T/66, nylon 10T/1012, nylon 61/66, nylon 6T/61/66, or a combination thereof. 
     
     
         4 . The nylon-based alloy resin composition of  claim 1 , wherein the styrene-based thermoplastic resin is polystyrene. 
     
     
         5 . The nylon-based alloy resin composition of  claim 1 , wherein the styrene-based thermoplastic resin has a weight average molecular weight ranging from 10,000 to 5,000,000 g/mol. 
     
     
         6 . The nylon-based alloy resin composition of  claim 1 , wherein the styrene-based thermoplastic resin has a melting point ranging from 200 to 320° C. 
     
     
         7 . The nylon-based alloy resin composition of  claim 1 , wherein the modified nylon-based thermoplastic resin and the styrene-based thermoplastic resin are present in a weight ratio ranging from 0.3:1 to 7:1. 
     
     
         8 . The nylon-based alloy resin composition of  claim 1 , wherein the inorganic filler comprises a fiber-type filler; a grain- or powder-type filler; or a combination thereof. 
     
     
         9 . The nylon-based alloy resin composition of  claim 8 , wherein the fiber-type filler comprises a glass fiber, a carbon fiber, an alumina fiber, an aramid fiber, a carbonized silicon fiber, or a combination thereof. 
     
     
         10 . The nylon-based alloy resin composition of  claim 8 , wherein the grain- or powder-type filler comprises talc, carbon black, titanium dioxide, barium carbonate, magnesium carbonate, or a combination thereof. 
     
     
         11 . The nylon-based alloy resin composition of  claim 8 , wherein the inorganic filler comprises a mixture of 10 to 90 wt % of glass fiber and 10 to 90 wt % of titanium dioxide. 
     
     
         12 . The nylon-based alloy resin composition of  claim 8 , wherein the inorganic filler comprises glass fiber having a cross-sectional aspect ratio ranging from 1.5 to 8. 
     
     
         13 . The nylon-based alloy resin composition of  claim 8 , wherein the inorganic filler comprises titanium dioxide having a particle size ranging from 0.1 to 0.4 μm. 
     
     
         14 . The nylon-based alloy resin composition of  claim 1 , wherein the inorganic filler has a moisture absorption rate of 0.05% or less. 
     
     
         15 . The nylon-based alloy resin composition of  claim 1 , further comprising an antioxidant, a heat stabilizer, a light stabilizer, a fluid developing agent, a lubricant, a biocide, a release agent, a nucleating agent, a fluorescent whitening agent, or a combination thereof. 
     
     
         16 . The nylon-based alloy resin composition of  claim 1 , having a viscosity ranging from 100 to 500 Pa·s at a shear rate ranging from 60 to 100 s −1 . 
     
     
         17 . A light emitting diode (LED) reflector fabricated using the nylon-based alloy resin composition of  claim 1 .